Deckle for paper-making machines



June 17, 1930.

J. W. HARRIS DECKLE FOR PAPFR` MAKING MACHINES Filed Aug. 4, 1925 3Sheets-Sheet 1 June 17, 1930. J, w, HARRls 1,764,260

DEGKLE FOR PAPER MAKING MACHINES Fiied Aug. 4, 1925 3 Sheets-Sheet 2lllll A A llll-lllllll Illmlllllll' June'l7, 1930. J. w. HARRIS DECKLEFOR PAPER'MAKING MACHINES Filed Aug. 4. 1925 3 sheets-shet s lill' 1||||I1 limi' Hummm Patented June` 17, 1930 UNITED STATES PATENT' ortica4JAMES W. HARRIS, or neutroni), MAINE, AssIGNoR, EY MESNE ASSIGNMENTS',To PAPER- MAeHrNER-Y ooRPoEAToN, or DAYTON, oHIo, A CORPORATION? or omoDECKLEFOR PAPER-MAKING MACHINES Appncation mea August 4, 1925. serial'no. 48,024.

My invention relates' to deckles for papei` making machines and isapplicable to paper nia-king machines of many different kinds.

T he object of my invention is to provide a stationary deelde for use inpaper making machines generally and which has many advantages overprevious deckles used in paper making machines. Previously, in papermalting machines the deolles generally in use were comprised of what isknown as declle straps which were carried upon rolls so that there wouldbe one deckle strap at each side of the saine supported upon and movingwith the FourdrinierV wire screen, to prevent the r liquid carrying thepaper stock from owing laterally oii" the wire. By providing stationarydeckles,v in accordance with my invention, the life of the wire isincreased, and the life of the rolls carrying the wire is alsoincreased, as they do not support the weight of the declles. There isalso greater ease in changing the width of the sheet on the machine, andless liability of water and dirt dropping from the upper part of thedeckles onto the paper.

Furthermore, the declrles made in accordance with my invention not onlyenable a sheet of paper to be made, which is better formed and morenearlyr of the same thickness at the edges while increasing theproduction of the machine due to the longer life of the wire, but alsoeliminate the elaborate mechanical devices previously used forcarryingthe deckle straps, and accordingly del n crease the'cost of repairs inthe upkeep of the machine.

Furthermore, I have found that'I may accmnplish the above purposeswithout having` such long decliles as were previously used. Furtheradvantages of my invention will appear from a detailed description ofthe same hereinafter. A

lVhile my invention is capableof embodiment in many different forms, byway of illustration l shall describe only one form of the saine in theaccompanying drawings, in which- Figure l is a side elevation of a papermaking machine shown diagrammatically and equipped with my improved formof deckles,

Figure 2 is a plan view of the same,

Figure 3 is a' transverse section taken on In the drawings I have 'showna Fourv,

drinier paper makingi'nachine having astoclt supply box for receivingthe stoclrcarried by a body of water, preferably in the proportion ofabout 8-38/100 pounds of paper stoel; to 200 gallons of Water, the samebeing' delivered into the stock` supply box through any suit-- able typeof screens, in the usual manner. From this point the paper stoclr'liowsout of the stock supply box onto an apron 2 to a dept-h of about 4inches, the dept-hrbeing main tained by means of two side' aprons 3'`andtwo slices 4 and 5, in the usual manner. From this point the watercarrying the paper stock flows under the slices 4 and 5 onto a Fourdrinier wire 6 of the usual l`i'nd,whicliis coms prised of a very finewire mesh screen cloth of brass in the form of a belt passing over roll7 having an adjusting mechanism 8, pro vided with an operatingl handle9, for raising or lowering the roll 7. The other end of the wire passesover a suction or couch roll 10 of the usual type. The roll 7 and itsadjusting mechanism 8 are carriedv by a support 11, which, together withtwo supports l2 near the other end of the machine, actas a sup'-Aporting means for two longitudinal rails 13. and`14, forming therewiththe main frame of the machine. The wire 6 in its forward movement passesover a set of table rolls 15" supported in any suitablebearings' carriedby angle bars 16 supported in any" suitable manner from the rails 13 andv14. Y

The paper stock which passes under theV slices 4 and5 tobe received uponthey wire' 6 formsa paper web owing to the elimination of the water'therefrom, the body of' stock being maintained in position at a uniformloo depth during the formation of the paper web by means of stationarydecirles, comprised of sheets of fabric, such as rubber or any otherdesired material 17 and 18, located at the two sides to the machineimmediately above the Wire 6. The supporting means for the rubber sheets17 and 18 is comprised of outer clamping plates of copper 19 and 2O andinner angle members of copper 21 and 22 secured together byl bolts 23.The angle members 21 and 22' are secured by bolts 24 to four deeldeframes 25, 26, 27 and 28, which are slidably mounted upon correspondingdeckle frame supports 29, 30, 31 and 32, having geared serevs7 threadedshafts 33 passing therethrough to engage with the decirle frames 25, 26,27 and 28. The

y said shafts 33 are adapted to be operated by CII handles 34 and 35with the aid of longitudinal shafts 36 and 37, having appropriatebearing meshing With the gears 33. It will be noted that the supports29, 30, 31 and 32 are carried upon suitable uprights 34', 35', 36 and 37which, if desired. may be made of telescoping parts, as shown in Figure1, in order to enable them to be adjusted vertically by means of nuts37". The Water which passes through the Wire 6 at this point in themachine is received by appropriate trays 38, 39, 40, 41 and 42, fromwhich the Water flows into laterally removable pans 43, 44, 45 and 46.

After leaving the table rolls 15, the Wire passes over any desired typeof vacuum ber-es 47, 48 and a supporting roll 49 and between asupporting roll and a dandy roll 51. Thence it passes over tivo vacuumboxes and 53 and a guide roll 54 until the suction roll 10 is reached.Thereafter the wire 6 passes in the reverse direction adjacent tocarrying and stretch rolls 55, 56, 57, 58 and 59 back to the `breastroll 7. Y

It will also be noted that the deckles are comparatively short in thatthey do not eX- tend more than approximately one third the length of theset of table rolls 15, Whereas previously the decirle straps haveextended even beyond the end of the set of table rolls.

In the operation of my apparatus the paper stock carried by the body ofWater flows into the stock supply box 1. and thence onto the apron 2,Where it is maintained at a depth of substantially four inches by meansoft-hc side aprons 3. The paper stockl theu fiou's onto the Wire 6 andunder the slices 4 and 5, which provide a body of the paper stock ofuniform depth on the Wire. This uniformity' of depth is maintained evenat the sides of the ivire 6, owing to the presence of the stationarydeekles at `the two sides ofthe Wire, which effectively prevent the bodyofpaper stock from flowing away at the edges of the Wire 6. Thesedecirles may be adjusted laterally when desired by means of the handles34 and 35, all of the four ends of the two decirles being simultaneouslymoved in a V uniform manner during the adjustment'. lise the decirlesmay be adjusted in a vertical direction by adjusting the nuts 37 andelevating the vertical supports 34, 35', 36 and 3T or lowering the same,as desired. The Water which flows away from the paper stock through theWire 6 is collected in the pans 43, 44 and 45 and flows therefromcontinually to a suitable return water pump. The Web of paper thusformed on the Wire 6 is thereafter conveyed over vacuum bones 4? andthroueh the supporting roll 5() an d the dandy roll 51 and over vacuumboxes 52 and for the removal of the residual Water, after which theiinal traces of Water are removed by the suction roll 10, and the Web ofpaper conveyed therefrom to any suitable apparatus for further iinishingthe paper in the desiredmanner. The Wire 6 then travels in the reversedirection back to the roll 7.

While I have described my invention above in detail, I Wish it to beunderstood that many changes'may be made therein Without departing fromthe spirit of the same.

I claim: Y

1. In a paper making machine a substantially stationary decirle, comp-ising a sheet of flexible material, means for holding the same, and a.laterally adjustable means to which the flexible material holding meansis removably secured for supporting the holding means. v

2. In a paper making machine a substantially stationary decirle,comprising a sheet of iiexible material, clamping plates on opposidesides of the said sheet holding' the same, and a laterally adjustablemeans to which the clamping plates are removably secured for supportingthe clamping plates.

3. In a paper making machine of the character described, having atraveling forming Wireand means for flowing a stream of stoel( upon saidtraveling Wire, a stationary decide forrrestraining lateral spread ofthe stock upon the Wire, comprising a laterally adjustable channelmember extending longitudinally of said Wire, a longitudinally extendingangle member having one leg removably secured to said channel member, 'adepending sheet of flexible material adapted to extend to a position torestrain lateral spread oi stock upon said Wire, and a eian'lping platefor removably securing said sheet between the other leg of said anglemember and said clamping plate.

In testimony that I claim the foregoing, I have hereunto set my handthis 39th day of July, 1925.

JAMES IV. Hiiiiiff.

